Series of tests to ensure correct behavior of canvas.clearRect(). On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". Test canvas.clearRect() with height = width = 0. PASS imgdata[0] is 255 PASS imgdata[1] is 0 PASS imgdata[2] is 0 Test canvas.clearRect() with height = 0, width = 1. PASS imgdata[0] is 255 PASS imgdata[1] is 0 PASS imgdata[2] is 0 Test canvas.clearRect() with height = 1, width = 0. PASS imgdata[0] is 255 PASS imgdata[1] is 0 PASS imgdata[2] is 0 PASS successfullyParsed is true TEST COMPLETE